Sound frequency

Brittykitty

A 245 Hz sound with a wavelength of 1.41 m is projected into a narrow canyon. If the canyon is 1.50 km long, what time does it take an echo to be heard?

How would I solve for this question? :)

rock.freak667

Given the frequency and wavelength, what is the speed of your wave?

Brittykitty

245[hz] * 1.41[m] = 345 m/s? :)

rock.freak667

Right, so the wave must travel 1.5 km while traveling at 345 m/s, how would you find the time taken given the distance traveled and the speed?

Brittykitty

t=d/s
t=1.5km/ 345ms?
t=4.35s?

rock.freak667

Yes that should be it.

Brittykitty

Thank you SO much!! :D